Rho to Trezzano sul Naviglio trains might be a good value for money solution: travelling in Italy by train is often rather cheap and faster than taking a bus indeed Trains leave from Rho and arrive at Gaggiano every 30 minutes on average. If travelling with Trenitalia, you need to know the Rho to Trezzano sul Naviglio train schedule: the first train leaves at 05:54, while the last ride is at 21:24. A Rho to Trezzano sul Naviglio train cost about 4.8 €. But how long is the train ride from Rho to Trezzano sul Naviglio? Your journey takes about 1 hour on average.